Operating Era: 1913-1965. D&RG/W: 1916-1966. THIS SERIES OF KITS NOW COMES WITH OUR NEW ONE-PIECE ROOF FRAME. Denver & Rio Grande, Denver & Rio Grande Western, Chicago, Rock Island & Pacific, Minneapolis & St. Louis. Between 1913-1916, 7,000 Fowler clones were built for Rock Island and Denver & Rio Grande by 4 car builders. Each builder used slightly different details and the two roads differed also, so 5 physically different designs were produced. We duplicate each with decals and details that cover the lives of the cars.